What was found
RECEIVED GEAR DISAGREE WARNING ACCOMPANIED WITH NLG UNSAFE INDICATION. COMPLIED WITH QRH PROCEDURE & RETURNED TO FIELD. FLT 5256 REPLACED NLG DOOR SELECTOR VLV & REPLACED LG CONTROL HANDLE IAW AMM. PERFORMED SEVERAL GEAR SWINGS, PN 601R50967-11, SN ON 1602, SN OFF 1352, PN 750006000, SN ON 0293T & SN OFF 1257.